Changeable seat



Feb. 22, 1927. f 8,697

S. BURSZTYN CHANG EABLE SEAT Original Filed Dc. 11, 1924 INVENTOR ATTORNEY Patented Feb. 22, 1927.

uairss stares SZYMON BUR-SZTYN, OF NEW YORK, N. Y.

CHANGEABLE 'snAr.

Application filed December 11, 1924, Serial No. 755,129." "Renewed September 21,1926.

This invention aims to improve sitting conditions and accomplishes the same by providing a novel seat cushion which may alternately serve as a seat cushion or a back cushion. In theatre or barber chairs, or in similar conditions where chairs are extensively used during the day, a seat becomes uncomfortable when sat upon for a relatively long length of time and also introduces an unhygienic condition. .This invention provides a seat cushion which may be shifted to a position where it serves as a back cushion by the movement of a foot lever, the foot lever when depressed, rotating the cushion thru' an angle of ninety degrees to a position where it serves as a back rest.

The above and other objects will become apparent in the description below, in which characters of reference refer to like-named parts in the drawing. I

Referring briefly to the drawing, Figure 1 is a side elevational view of the chair, showing the cushion being used as a seat and the means for lifting the seat from the horizontal to the vertical position.

Figure 2 is a front elevational view of Figure 1. I

Figure 3 is a top plan view of the seat cushion per. se. r

Figure l is a sectional side elevational view of Figure 3.

Referring in detail to the drawing, the numeral indicates the seat proper of'the chair. This seatis supported on frontlegs 11 and rear legs 12, the latter rising above the seat of the chair to form a frame upon which the back rest 13 and back stays 14 are constructed. In theatre and barber chairs, and chairs where convenience and comfort of the user are essential, arm rests 15 are provided on the sideedges of the chair. These arm rests are supportedion bars 16 at their forward ends and extend generally from the rear legs 12 above the seat proper 10. The seat cushion 17 is of the ordinary construction comp osedof flexible material such as leather or fabric, and is provided with the usual upholstery buttons 18 which serve to retain the enclosed cushioning material 19 in distributed positions. Within the cushion, a U-shaped frame 20 is mounted and the legs 21 of this frame extend'outwardly at right angles and one of these legs is formed into a crank arm 22 which has a right angle extension 23 thereon. The ends of the legs are journalled in brackets 24, the latter being mounted on the front surfaces of the rear legs 12 of the chair above the seat proper 10. Below the seat 10 of the chair, a single bracket 25 is provided on one of the legs 12, and on this bracket, a bell crank 26 is fulcrumed. The arm 27 of the bell crank is slotted thruout the greater portion of its length and the extension 23 of the crank 22 is adapted to register in the slot 2801 the bell crank. The remaining arm of the bell crank 26 has a foot plate 29 at its extreme end. i

In use, the cushion 17 normally rests on the seat 10 of the chair. When used in this position for a relatively long length of time, the cushion 17 becomes heated and uncomfortable. person using the chair would become uncomfortable and an unhygienic condition would exist. In order to ventilate the cushion, therefore, and at the same time serve its purpose, the foot plate 29 is urged downwardly, thus rotating the bell crank 26 to the position shown in Figure 1 of the drawing. The crank 22 will be rotated by the bell crank, and said cushion will assume the position shown in dotted lines in Figure 1, in which position it serves as a back rest.

I claim Under such conditions, the next 7 51. A device'of the class described used in with the crank arm of the frame to rotate said cushion from the horizontal to the vertical position.

'2. A device of the class described used in combination with a chair, ZL CUShIOII normally adapted to cover the seat of the ohair,

a U-shaped frame in said cushion, the legs of said frame being adapted to extend from the rear corners of said cushion, a crank arm on one of said extending ends of said U-shaped frame, brackets on said chair pivotally supporting the extensions of said frame, a bell crankpivotally mounted on said chair engaging said crank arm and adapted to rotate the U-shaped frame from the vertical to the horizontal position- 3. A. device of the class described used in eoniliiinntim'l with a chair, :1 eushien n01- malty adapted to CUYOI. the seat eithe chair, a U-shaped frame in said cushion, the legs 01" said frame being zu laptvd to extend from the rear corners of said cushion, a crank arm on one of said extending ends of Said U-shaped frulne, brackets on said chair pivotally supporting the extensions of said emme? mine :1 hell crank, a slotted nrln on said hell (Tank, an angular extension on said crank :u'in adapted to register in the slot of the hell crank, and a foot plate at the f0r- Wm-d end of said hell crank for manipulating the latter.

IIItQStilnOIlY whereof I afiix my signature.

SZYMON BURSZTYN. 

